diff --git a/addons/mail/static/src/models/messaging.js b/addons/mail/static/src/models/messaging.js
index cf478a7b004..6b9ea88ad09 100644
--- a/addons/mail/static/src/models/messaging.js
+++ b/addons/mail/static/src/models/messaging.js
@@ -322,14 +322,6 @@ registerModel({
         isNotificationPermissionDefault: attr({
             compute: '_computeIsNotificationPermissionDefault',
         }),
-        /**
-         * States whether the current environment is QUnit test. Useful to
-         * disable some features that are not possible to test due to
-         * technical limitations.
-         */
-        isQUnitTest: attr({
-            default: false,
-        }),
         locale: one('Locale', {
             default: insertAndReplace(),
             isCausal: true,
diff --git a/addons/mail/static/tests/helpers/test_utils.js b/addons/mail/static/tests/helpers/test_utils.js
index c75302040f4..deb25c9cd62 100644
--- a/addons/mail/static/tests/helpers/test_utils.js
+++ b/addons/mail/static/tests/helpers/test_utils.js
@@ -777,7 +777,6 @@ async function start(param0 = {}) {
             messagingValues: {
                 autofetchPartnerImStatus: false,
                 disableAnimation: true,
-                isQUnitTest: true,
                 loadingBaseDelayDuration,
                 messagingBus,
             },